You will get Node.js/Nest.js/Express.js web application
Top Rated
Project details
You will get a scalable and high-performance Node.js/Express.js backend, seamlessly integrated with your frontend or mobile app.
I'm passionate about transforming ideas into reality and leveraging my expertise to help businesses thrive. My deep understanding of Node.js and Express.js allows me to construct robust backends that power dynamic applications.
My Backend Skills:
API Mastery: I specialize in building RESTful APIs with Node.js and Express.js, ensuring smooth communication between your frontend and backend systems.
Database Expertise: Whether your project requires the flexibility of MongoDB or the structured power of MySQL, I can design and implement the perfect database solution to meet your needs.
Real-Time Communication: I have hands-on experience with WebSocket technology, enabling me to build applications that offer instant updates and seamless interactions.
Note: The budget listed is a placeholder. Please discuss the complete project requirements before purchasing the catalog.
I'm passionate about transforming ideas into reality and leveraging my expertise to help businesses thrive. My deep understanding of Node.js and Express.js allows me to construct robust backends that power dynamic applications.
My Backend Skills:
API Mastery: I specialize in building RESTful APIs with Node.js and Express.js, ensuring smooth communication between your frontend and backend systems.
Database Expertise: Whether your project requires the flexibility of MongoDB or the structured power of MySQL, I can design and implement the perfect database solution to meet your needs.
Real-Time Communication: I have hands-on experience with WebSocket technology, enabling me to build applications that offer instant updates and seamless interactions.
Note: The budget listed is a placeholder. Please discuss the complete project requirements before purchasing the catalog.
Programming Languages
JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$299
|
Standard
$599
|
Advanced
$1,099
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 14 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 2 | 5 | 10 |
Design Customization | - | ||
Content Upload | - | ||
Responsive Design | |||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$100 - $300
Additional Revision
+$100
Additional Page
(+ 2 Days)
+$100
Content Upload
(+ 1 Day)
+$100
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JG
Jay G.
Feb 12, 2026
Full-Stack Developer (Flask/Vue3/Docker/AWS)
Arun is a great full-stack developer, and we're only ending this particular contract so that we can hire him back at a higher rate. If you ever get a chance to hire him, jump on it!
JH
Jason H.
Feb 14, 2025
Website
JD
Justin D.
Apr 26, 2023
ChatGPT Fine-Tuning Model API Integration - Laravel, Javascript, jquery (REQUIRED)
I am absolutely thrilled with Arun's OpenAI API integration. He consistently delivered high-quality work throughout the project. Arun's availability and adherence to the schedule were outstanding, and he always made himself available to communicate and collaborate effectively. The only thing I would emphasize is to not leave details to be assumed. Articulate every aspect, and confirm the interpretation is consistent. Overall, I cannot recommend Arun highly enough - he is an absolute rockstar and I look forward to working with him again in the future! 5 stars across the board for skills, quality of work, availability, adherence to schedule, communication, and cooperation.
KW
Kubana W.
Mar 15, 2022
CI/CD pipeline to build scala code and deploy to cloud storage
He is a good guy, approachable. I will recommend him to you
About Arun
Senior Full Stack Developer Python/Node.js/PHP/React/Angular/Vue.js
100%
Job Success
Kaithal, India - 1:26 pm local time
I am a Senior Full-Stack Developer with 9+ years of experience building scalable, production-ready web and mobile applications. I specialize in modern full-stack development, AI-powered products, automation workflows, SaaS platforms, admin dashboards, APIs, and high-performance business applications.
I use AI tools like Cursor, Claude Code, ChatGPT, Codex, GitHub Copilot, and agentic IDEs to move faster — but I do not rely on AI blindly. Every solution is reviewed, structured, tested, and improved using real senior engineering experience.
My focus is simple: clean architecture, fast delivery, scalable code, and long-term maintainability.
🚀 What I Can Help You Build
✅ AI-powered web applications
✅ SaaS platforms and dashboards
✅ Custom CRM, ERP, admin panels, and internal tools
✅ REST APIs and backend systems
✅ Frontend apps from Figma designs
✅ Mobile apps using Swift, SwiftUI, Kotlin, Jetpack Compose, React Native
✅ AI agents, chatbots, and workflow automation
✅ RAG-based document search and knowledge-base systems
✅ Data extraction, scraping, and automation tools
✅ Trading, fintech, analytics, and reporting platforms
🤖 Modern AI & Automation Skills
I can help you integrate modern AI features into real business products, including:
⭐ AI agents and multi-step workflows
⭐ LLM integration using OpenAI, Claude, Gemini, Ollama, and local models
⭐ RAG systems with vector databases
⭐ Document/PDF extraction and intelligent data processing
⭐ AI chatbots and copilots
⭐ Prompt engineering and AI workflow optimization
⭐ Automation using APIs, queues, background jobs, and scheduled tasks
⭐ Human-in-the-loop review systems for safe AI output
🛠️ Tech Stack
Backend: Python, Django, Flask, FastAPI, Node.js, NestJS, PHP, Laravel
Frontend: Next.js, React.js, Vue.js, Angular, Tailwind CSS, Bootstrap, PrimeVue, Quasar, Material UI
Mobile: Flutter, React Native
Databases: PostgreSQL, MySQL, MongoDB, Redis
AI / Vector DB: OpenAI, Claude, Gemini, Ollama, Pinecone, Qdrant, Weaviate, ChromaDB
DevOps: Docker, GitHub Actions, CI/CD, AWS, DigitalOcean, Linux servers
Tools: Cursor, Claude Code, ChatGPT, Codex, GitHub Copilot, VS Code, Jira, GitHub, GitLab
🚀 Why Clients Work With Me
✨ AI-Assisted, Senior-Led Development
I use AI to speed up development, but every technical decision is guided by real-world engineering experience.
✨ Clean & Scalable Architecture
No messy code, no unnecessary libraries, no bloated files. I build systems that are easy to maintain and extend.
✨ Business-Focused Thinking
I do not just write code. I help you choose the right technical approach for your product and budget.
✨ Fast Delivery With Quality
AI tools help me move faster, but I still follow proper structure, testing, review, and deployment practices.
✨ Clear Communication
You will get regular updates, clear progress reports, and transparent GitHub commits.
📈 Proven Results
✅ 9+ years of professional development experience
✅ 100% Job Success on Upwork
✅ Top Rated Plus developer
✅ Successfully delivered 50+ projects
✅ Experience with startups, SaaS products, enterprise tools, and long-term client projects
🤝 My Professional Promise
📍 Clean, scalable, production-ready code
📍 Clear communication and daily progress updates
📍 Honest technical suggestions
📍 Long-term maintainable architecture
📍 Post-launch support and bug fixing
📍 A reliable technical partner, not just a developer
💬 Have an idea, existing project, or broken system that needs improvement?
Click “Message” or “Invite” and let’s discuss how I can help you build it faster and better.
Steps for completing your project
After purchasing the project, send requirements so Arun can start the project.
Delivery time starts when Arun receives requirements from you.
Arun works on your project following the steps below.
Revisions may occur after the delivery date.
Environment Setup
Set up the development environment, installing Node.js, npm (or yarn), Nest CLI (if using Nest.js), and any necessary database tools.
API Development
Build RESTful APIs using Express.js (or Nest.js controllers) to handle client requests and responses. Implement routing, middleware, request validation, and error handling.